Wrench.



. UNITED STATES PATENT OFFICE.

IVILLIAM A. EMERSON, OF SORRENTO, FLORIDA.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 653,767, dated July 17, 1900.

Application filed December 30, 1899. Serial No. 742,097. (No model.)

To all whom it may concern.-

Be it known that 1, WILLIAM A. EMERSON, a citizen of the United States, residing at Sorrento, in the county of Lake and State of Florida, have invented certain new and use ful Improvements in l/Vrenches, of which the following is a specification.

My invention relates to monkey-wrenches, the object being to provide a wrench which will be convenient in use and of simple and durable construction.

The main characteristic feature of the invention is that the outer jaw, which in the ordinary form of wrench is fixed or integral with the bar or body, is pivotally secured and provided with means for looking it in its closed position.

The construction of the invention and its novel features will be fully described hereinafter and defined in the appended claims in connection with the accompanying drawings, which form a part of this specification, and in which- Figure lis a side elevation of awrench embodying the invention. Fig. 2 is a longitudinal section of the same. Fig. 3 is a section on the line 3 3 of Fig. 1. Fig. 4 is a view in perspective of the locking-lever of the device, and Fig. 5 is a perspective of the strap which connects the pivoted jaw with the lockinglever.

The reference-numeral 1 designates the bar or body of the Wrench, formed with an opening 2 near its handle end, an opening or recess 3 adjacent to the opening 2, and terminating in a threaded stud 4. p

5 designates the slidable jaw of the wrench which is of the usual construction, having a threaded socket 6 and a guide-loop 7. Within the socket 6 extends a screw 3, provided with a thumb-nut 9 and having bearing in the projection 10 of the ordinary collar 11.

12 designates the outer jaw of the wrench, which is recessed or bifurcated to fit over the bar 1, to which it is pivotally secured by a cross-pin 13. The bar is provided with a shouldered extension 14., and the inner surface of said bar is formed with a groove 15, within which is arranged a metal strap 16, one end of which is bent around a pin 17 extending across the jaw'12. The opposite end ing within the recess 3, as shown in Fig. 2.

A catch 22, pivotally secured to the collar 11,-is adapted to be turned to secure the lever 20, as shown in Fig. 2.

A spring 23 is secured to the bar at one end and adapted to bear against the inner side of the lever 20 to force said lever outward to permit the jaw 12 to turn upon its pivot.

24 designates a hollow handle fitting over the end of the bar 1 and secured thereon by a nut 25. This handle is slotted longitudinally to accommodate the lever 20 and'is formed with an opening 26, registering with the recess 3 of the bar 1.

When/the lever 20 is locked by the catch 22, the wrench may be operated as an ordi nary monkey-Wrench by turning the nut 9.

The pivoted jaw 12 is adapted to be drawn from the position shown by dotted lines in Fig. 1 to the position shown in full lines by inward pressure upon the lever 20 acting upon the strap 16.

1. A wrench comprising a bar, formed with a longitudinal groove on its inner side; a jaw pivotally secured to said bar; a slidable jaw on the bar, a leverpivotally secured at one end to the bar and having a dog or projection at its opposite end a strap secured at one end to the pivoted jaw, and slotted at its opposite end to be engaged by said dog.

2. A. wrench comprising a bar formed with a longitudinal groove on its inner side; a jaw pivotally secured to the outer end of said bar; a slidable jaw on said bar; a lever pivotally secured to the handle end of the bar and provided with a dog; a strap connection between said pivoted jaw and lever; and a catch for locking the lever.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM A. EMERSON.

Witnesses:

J. B. REGISTER, N. B. TAYLOR. 

